Freezing-tank.



J. -F. BENDBR.

FREEZING TANK.

APPLICATION PILVED AUG.15, 1913. 1,1 14,957. Patented Oct. 27, 1914.

2 SHEETS-SHEET 1.

Witnesses: l'nve ntor I (U. En/a 144.. Siam. o y.

J. F. BENDER.

FREEZING TANK. APPLICATION FILED AUG. 15. 1913.

Patented 0011.27, 1914.

2 SHEETSBHEBT 2.

L/ohi/r ea r/ci Bender Inventor h. (Al En/2L Attorney Witnesses: M S m tank and serving to support the superfleor JOHN FREDRICK BENDER, OF HAMILTON, OHIO.

FREEZING-TANK.

To all whom it may concern: 4

Be it known that I, JOHN FREDRIUK BEN- DER, a. citizen of the United States, residing at Hamilton, Butler county, Ohio, have invented certain new and useful Improvements in Freezing-Tanks, of which the following is a specification.

This invention, pertaining to improvements in the construction of freezing tanks employed in the manufacture of ice, will be readilyunderstood from the following description taken in connection with the accompanying drawings, in which Figure l is a vertical transverse section of a freezing-tank embodying an exemplification of my invention; and Fig. 2 a plan of the same, the covers of some of the cans being removed and portions appearing in horizontal section.

In the drawings :1, indicates the outer casing of the general tank structure: 2, its floor: 3, the tank, disposed within the cas ing: 4, the floor of the tank: 5, insulating filling disposed in the space between the tank and casing: 6, a superfioor for the tank: 7, supports disposed upon the floor of the and leave a space between the floor and superfioor of the tank: 8, the cans disposed in rows Within the tank and separated from each other and from the tank-walls, the top of the cans being open and the footings of their walls having water-tight connection with the superfloor of the tank: 9, the brinespaces surrounding the cans: 10, grid-work surrounding the tops of the cans and separating them from each other and from the tank walls, this grid-work projecting above the top of the cans and so fitting the brinespaces 9 as not to be airtight 11, the removable can-covers seated on the grid-work 10: 12, the brine inlet-pipe leading into the base of brine-space 9 near one corner of the tank: 13, brine outlet-pipe leading out of brinespace 9 near'a corner of'the tank diagonally oppositethe brine inlet-pipe: 14, frame work at the top of the space between casing I and thew-a'l'l of the tank: 15, the space betweenthe: floor and superfioor of the tank: 16, water inlet-pipe leading up intospace 15 and,'prefera-bly, at center of the space: 1 7,- w fcnd'erdisposed' over inlet-pipe 16': 18,

Specification of Letters Patent.-

Application filed August 15, 1913.

Patented Oct. 27, 1914.

Serial No. 784,856.

a manhole giving access to space 15: 19, a large opening through the superfioor ofithe tank at the base of each can: 20, a nipple disposed at each of these openings and extending downwardly into space 15: 21, an air-jet pipe extending along under each row of nipples: 22, supporting saddles for these ainjet pipes: 23, a closed air-pipe communieating with the upper portion of space 15: 21, a rent-cock connected with this air-pipe: 25, a pressure-gage connected with pipe 23: 2G, a manifold connecting air-pipes 21: 27, a thaw-water inlet pipe leading'into space 15, near one corner of the space: and 28, a tha\\'-water outlet-pipe leading from space 15 near the corner, of the space diagonally opposite thaw-Water inlet-pipe 27.

It will, of course, be understood that while the structure illustrated comprehendsonly Sixteen cans, the system will lenditself to any desired number, and that all of the piping may be arranged in the manner most convenient for the situation and that the piping will be connected with suitable means for supplying the material which is to passthrough the pipes, and for controlling the fiow therethrough.

It will be obvious that the general structure is extremely sim le and substantial ni construction, and easily repaired in case of injury or decay of parts. The insulating material 5 may well be of granulated cork; the grid and cover-work may well be of wood; the outer casing of wood; and the other parts of metal. The cans, or any individual one of them, are readily removed from the tank by disconnecting the screws uniting their bases to the superfloor oi the tank.

Assume the structure to -e empty and out of use, and assume that the frigorihc material to be employed in space 9 is cold ples 20 and into the water in the cans, bring ing about a general circulation of theJvater within the cans to facilitate the freezing action by bringing all of the water into contact with the walls of the cans, the air at the same time working impurities upwardly; the water in space and in the cans will not fill the upper portion of space 15 but will be trapped under the superfioor around the nipples; this trapping of air retards the freezing at the base of the cans; fender 17 over the water-inlet-pi.pe serves in distributing the entering water in space 15; the low of water is to be arrested when the cans are sufliciently full; the flow of the brine is to be continued until the ice in the cans is properly formed and ready for removal therefrom; the air-jets may be cut oil" when congelation has so far proceeded that the jets can do no further good; gage may serve in indicating when the inflow pressure of water at pipes 16 is just sufiicient to fill the cans to the desired level, without overflowing them.

The ice having been formed in the cans, ready for removal, the inflow of cold water from. pipe 16 is to be cut off; thaw-Water is to be admitted to space 15 through pipe 27 and depart through pipe '28, keeping space 15 filled; vent 2% is to be opened, permitting the trapped air to leave the upper portion of space 15; the thaw-water thus has access to the under surface of the floor of the tank and to the nipples; the action of the thawwater is to melt and loosen such ice as may have frozen into adhesionto the superfloor and nipples; a warming agent is to be sub. stituted for the cold brine circulating in spaces 9; this warming agent may be a warm brine or any other suitable warming liquid; the circulation of the warming agent in spaces 9 ln'eaks the adhesion of the cakes of ice to the walls of the cans; the cakes are readily lifted from the cans; lifting-eyes or other grapple receiving devices may be frozen into the top of the cakes to facilitate their rel coral by a crane.

A metallic siqaerfloor is disposed beixveen the freezing water in the cans and the war-r in 'comoartments 15. If this were al then there'would be a tendency toward freezing in conufiuirlmeui 1.3 and a coi'isequcnt clogging of the aii'jets, in. addition to the undesired freezing at the bases of the c: But in the present example the Wa ler in space 15 is kept away from the superfloor by the insulating air trap below the superfie )r, This insulation is removed when the thaning is to be done.

I claim:

1. A freezingtank comprising, can to hold water to be frozen, a tank surrounding the can to hold a frigoriiic mixture around the can, a closed space below the floor of the said space while the water in the can is freezing, and means for venting said air and. supplying thaw-water to said space when the forming of the ice in the can is completed, combined substantially as set forth.

2. In freezing tanks, the combination of a refrigerating chamber, a can therein having its bottom substantially upon the floor of said chamber, the can being provided with a nipple extending below the floor of the chamber, a second chamber below the floor of the refrigerating chamber,means for supplying refrigerant in the refrigerating chamber, means for supplying thawing medium to the second chamber, means for supplying water to said second chamber for filling the can, an air pipe and an air jet thereon within the second chamber and below and directed upwardly into said nipple.

3. In freezing tanks, the combination of a refrigerating chamber, a phiralit of cans arranged in rows therein, a secon chamber below the floor of said refrigerating chamher, the cans being provided with nipples extending downward into said second chamber, air pipes lying below the bottoms of said nipples and provided with air jets below and directed upwardly into the nipples, means for supplying refrigerant to the refrigerating chamber, means for supplying water to be frozen to the second chamber, and means for supplying thawing medium to the second chamber.

4. In freezing tanks, the combination of a refrigerating chamber, another chamber be low the floor thereof, one or more cans in the refrigerating chamber, said cans communicating with said second chamber, means for supplying water to said second chamber and the cans, means for supplying thawing water to said second chamber, and means for maintaining a body of air at the top of said second chamber during freezing and for removing the said body of air and causing the thaw water to directly contact with the bot tom of the refrigerating chamber during thawing.

5. In freezing tanks, the combination of a freezing tank, one or more cans therein, each having a nipple extending below the floor of the tank, the chamber below the freezing tank )nclosmg said nipples, a closable a11- vcnt communicating with said chamber subslantially at the top thereof, means for supplying refrigerant to the freezing tank, means for supplying water to be frozen to said chamber, and means for supplying thaw water to said chamber.

6. in freezing tanks, the combination of a freezing tank, cans therein resting substantially on the bottom of the tank, the cans being p'.-ovided with nipples extending becan means for confining insulating air in l low said floor a chamber beneath said freezing tank and inclosing the nipples, an air to said chamber, and means 01 supplying pipe communicating withh saidf chamlberbzlxt thaw water to said chamber. approximatey the top t ereo a c osa e vent in said pipe, an air gage communicat- N FREDRICK BENDER with said chamber near the top, means Witnesses:

for supplying refrigerant to the freezing M. S. BELDEN, tank, means for sxipplying water to be. frozen GEORGE JOHNSON. 

